.wrapper-first section{
    width: 1226px;
    margin: 0 auto;
}

/************************ banner 横幅广告部分  ************************/
.wrapper-first section .banner{
    width: 100%;
    height: 460px;
    /*横幅广告容器要做成相对定位，给子元素做父元素*/
    position: relative;
}
.wrapper-first section .banner .banner-lunbo{
    width: 100%;
    height: 460px;
}
.wrapper-first section .banner .banner-lunbo .lunbo-img{
    width: 100%;
    height: 460px;

    opacity: 0;
    position: absolute;
    left: 0;
    top: 0;
}
.wrapper-first section .banner .banner-lunbo .lunbo-img:first-child{
    opacity: 1;
}
.wrapper-first section .banner .banner-mengban{
    width: 234px;
    height: 460px;
    background-color: #000;

    position: absolute;
    left: 0;
    top: 0;

    opacity: 0.3;
}
.wrapper-first section .banner ul{
    width: 234px;
    height: 420px;

    position: absolute;
    left: 0;
    top: 20px;
}
.wrapper-first section .banner ul li{
    width: 234px;
    height: 42px;
    cursor: pointer;

    display: flex;
    justify-content: space-between;
    align-items: center;
}
.wrapper-first section .banner ul li:hover{
    background-color: #FF6700;
}
.wrapper-first section .banner ul li a{
    margin-left: 30px;
    font-size: 14px;
    color: #fff;
}
.wrapper-first section .banner ul li i{
    margin-right: 30px;
    font-size: 20px;
    color: #fff;
}
.wrapper-first section .banner ul li .banner-box{
    display: none;
    width: 248px;
    height: 460px;
    background-color: #fff;
    box-sizing: border-box;
    border: solid 1px #E0E0E0;
    /* 阴影 */
    box-shadow: 0 2px 10px rgba(0,0,0,.15);

    position: absolute;
    left: 234px;
    top: -20px;
}
.wrapper-first section .banner ul li:nth-child(1) .banner-box{
    width: 992px;
}
.wrapper-first section .banner ul li:nth-child(2) .banner-box{
    width: 496px;
}
.wrapper-first section .banner ul li:nth-child(3) .banner-box{
    width: 744px;
}
.wrapper-first section .banner ul li:nth-child(4) .banner-box{
    width: 496px;
}
.wrapper-first section .banner ul li:nth-child(5) .banner-box{
    width: 744px;
}
.wrapper-first section .banner ul li .banner-box p{
    float: left;
    box-sizing: border-box;
    width: 247px;
    padding: 24px;

    display: flex;
    align-items: center;

    font-size: 14px;
    color: #333;
}
.wrapper-first section .banner ul li .banner-box p img{
    width: 27px;
    height: 38px;
    margin-right: 20px;
}
